Kalijev Klorid Lekarna Ljubljana (Potassium Chloride)

Potassium Chloride is used as an electrolyte supplement to manage conditions associated with low potassium levels.

• Hypokalemia: restores normal serum potassium concentrations in patients with documented potassium deficiency.
• Diuretic therapy: compensates for potassium loss in patients receiving loop or thiazide diuretics.
• Chronic kidney disease: helps maintain potassium balance when dietary intake is insufficient.
• Renal transplantation: provides potassium supplementation during postoperative management to support electrolyte stability.
• Heart failure: used under medical supervision to correct potassium deficits that may arise from diuretic therapy.

• Potassium chloride dissociates in the gastrointestinal tract, releasing potassium ions that are absorbed primarily in the small intestine. The absorbed potassium enters the extracellular fluid, raising serum potassium concentration and restoring the electrochemical gradient essential for cellular functions such as nerve impulse transmission, muscle contraction, and cardiac electrical activity. It also contributes to the maintenance of intracellular potassium stores through the Na+/K+‑ATPase pump.

Potassium chloride may cause a range of adverse reactions, varying from mild gastrointestinal discomfort to serious electrolyte disturbances.

Common Side Effects

• Nausea: mild stomach upset that may occur after ingestion.
• Vomiting: expulsion of stomach contents, usually transient.
• Abdominal discomfort: cramping or pain in the stomach area.
• Constipation: reduced bowel movements leading to hard stools.

Serious or Rare Side Effects

• Hyperkalemia: dangerously high serum potassium that can affect heart rhythm.
• Cardiac arrhythmia: irregular heartbeats that may be life‑threatening.
• Severe allergic reaction: rash, swelling, or anaphylaxis requiring immediate medical attention.

When using potassium chloride, several precautions should be observed to ensure safe and effective therapy.

• Assess serum potassium: measure baseline potassium levels before initiating therapy.
• Monitor renal function: evaluate kidney performance regularly as impairment can increase risk of accumulation.
• Adjust dose in cardiac patients: use caution in individuals with heart disease or on digoxin.
• Avoid concurrent potassium‑sparing agents: discontinue or limit use of drugs that raise potassium to prevent hyperkalemia.
• Review medication list: check for interactions with ACE inhibitors, NSAIDs, and certain antibiotics.
• Store at ambient temperature: keep below 25 °C in the original container, protected from moisture and light.

Potassium chloride can interact with several medicines, altering potassium balance or drug effectiveness.

Major Interactions (Avoid)

• ACE inhibitors: may cause additive increase in serum potassium leading to hyperkalemia.
• Potassium‑sparing diuretics (e.g., spironolactone): combined use can result in dangerous potassium excess.
• Trimethoprim‑sulfamethoxazole: can impair potassium excretion and raise serum levels.

Moderate Interactions (Monitor Closely)

• Digoxin: elevated potassium can modify digoxin toxicity risk; monitor cardiac function.
• NSAIDs: may reduce renal potassium excretion, requiring periodic potassium monitoring.
• Beta‑blockers: can mask symptoms of hyperkalemia; observe electrolyte status.